The Blue Ribbon Safety Dump-Lok is a dump body support accessory used while working on anything under a lifted dump. These pieces of equipment are used to support the weight of the dump body in the event of a catastrophic hydraulic failure while you are working under the vehicle. The Dump-Lok is sold in pairs and comes in varying sizes to fit the smallest to the largest dump trucks. This product is proven to alleviate dangerous conditions up to 50,000lbs. With the two supports fitting snuggly on the frame rail, and the added support of the safety chain, your employees are guaranteed safe working conditions even on the toughest jobs. MJR Equipment uses Dump-Lok every day to help protect the lives and safety of our employees.